MidGard
well, screwing with the universe is close to impossible but not that's impossible. They already meddled with the universe's matters when he gained elemental manipulation and hatched Nemo(remember the thunderclap sound over the universe), so being gem primogenitor is not impossible but that would make Felix OP and that's not suitable at the moment. Sure he needs to be powerful when he go against the Darkin faction and meeting the spirit primogenitor